Supported Entities
// 13 DXF entity types parsed and rendered
@cadview supports the most common DXF entity types covering geometry, text, block references, dimensions, and fill patterns.
Geometry
LINE
A straight line segment between two points.
| Property | Type | Description |
|---|---|---|
start | Point3D | Start point |
end | Point3D | End point |
CIRCLE
A full circle defined by center and radius.
| Property | Type | Description |
|---|---|---|
center | Point3D | Center point |
radius | number | Radius |
ARC
A circular arc segment.
| Property | Type | Description |
|---|---|---|
center | Point3D | Center point |
radius | number | Radius |
startAngle | number | Start angle in degrees |
endAngle | number | End angle in degrees |
ELLIPSE
A full or partial ellipse.
| Property | Type | Description |
|---|---|---|
center | Point3D | Center point |
majorAxis | Point3D | Endpoint of major axis (relative to center) |
minorRatio | number | Ratio of minor to major axis (0–1) |
startParam | number | Start parameter in radians |
endParam | number | End parameter in radians |
LWPOLYLINE
A lightweight polyline with optional arc segments (bulge factor).
| Property | Type | Description |
|---|---|---|
vertices | DxfLwPolylineVertex[] | Vertex list with x, y, bulge, widths |
closed | boolean | Whether the polyline is closed |
constantWidth | number | Constant width for all segments |
elevation | number | Z elevation |
POLYLINE
A 2D or 3D polyline (legacy format).
| Property | Type | Description |
|---|---|---|
vertices | DxfLwPolylineVertex[] | Vertex list |
closed | boolean | Whether the polyline is closed |
is3d | boolean | Whether this is a 3D polyline |
SPLINE
A B-spline (NURBS) curve.
| Property | Type | Description |
|---|---|---|
degree | number | Spline degree |
knots | number[] | Knot vector |
controlPoints | Point3D[] | Control points |
fitPoints | Point3D[] | Fit points |
weights | number[] | Control point weights |
POINT
A single point in space.
| Property | Type | Description |
|---|---|---|
position | Point3D | Point coordinates |
Text
TEXT
Single-line text.
| Property | Type | Description |
|---|---|---|
text | string | Text content |
insertionPoint | Point3D | Insertion point |
height | number | Text height |
rotation | number | Rotation in degrees |
style | string | Text style name |
hAlign | number | Horizontal alignment (0–5) |
vAlign | number | Vertical alignment (0–3) |
MTEXT
Multi-line formatted text. May contain MTEXT format codes (e.g., \P for paragraph break, \fArial; for font changes). Format codes are stripped during rendering.
| Property | Type | Description |
|---|---|---|
text | string | Text with format codes |
insertionPoint | Point3D | Insertion point |
height | number | Text height |
width | number | Text box width |
attachmentPoint | number | Attachment point (1–9) |
rotation | number | Rotation in degrees |
style | string | Text style name |
References
INSERT
A block reference (instance of a block definition). Supports scale, rotation, and MINSERT grids.
| Property | Type | Description |
|---|---|---|
blockName | string | Referenced block name |
insertionPoint | Point3D | Insertion point |
scaleX | number | X scale factor |
scaleY | number | Y scale factor |
scaleZ | number | Z scale factor |
rotation | number | Rotation in degrees |
columnCount | number | Grid columns (MINSERT) |
rowCount | number | Grid rows (MINSERT) |
columnSpacing | number | Column spacing |
rowSpacing | number | Row spacing |
attribs | DxfAttrib[] | Block attributes |
DIMENSION
A dimension annotation. Rendered via its associated anonymous block.
| Property | Type | Description |
|---|---|---|
blockName | string | Anonymous block containing dimension geometry |
dimStyle | string | Dimension style name |
dimType | number | Dimension type flags |
defPoint | Point3D | Definition point |
textMidpoint | Point3D | Text midpoint |
textOverride | string | Override text (empty = auto-calculated) |
Fill
HATCH
A filled region with boundary paths. Supports solid fills and hatch patterns.
| Property | Type | Description |
|---|---|---|
patternName | string | Hatch pattern name (e.g., "SOLID") |
solidFill | boolean | Whether this is a solid fill |
boundaryPaths | DxfHatchBoundaryPath[] | Boundary path definitions |
patternAngle | number | Pattern rotation angle |
patternScale | number | Pattern scale |
Boundary paths can be either polyline-based or edge-based (composed of LINE, ARC, ELLIPSE, and SPLINE edges).
Common Properties
All entities share these base properties:
| Property | Type | Description |
|---|---|---|
type | string | Entity type discriminant |
handle | string? | Unique entity handle |
layer | string | Layer name |
color | number | ACI color (0=BYBLOCK, 256=BYLAYER, 1–255=direct) |
trueColor | number? | 24-bit RGB color |
lineType | string | Line type name |
lineTypeScale | number | Line type scale factor |
lineWeight | number | Line weight |
visible | boolean | Visibility flag |
extrusion | Point3D | OCS normal vector |